knitr::include_graphics("pictures/Northern Pike.jpg")

https://www.fishbase.de/photos/PicturesSummary.php?StartRow=8&ID=258&what=species&TotRec=20

knitr::include_graphics("pictures/Muskellunge.jpg")

https://www.fishbase.de/photos/PicturesSummary.php?StartRow=0&ID=2711&what=species&TotRec=6

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